<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        var arr = [1, 3, 5, 4, 2, 1, 6, 9, 2, 0];
        // 转字符串
        var result = arr.join();
        console.log(arr, result);


        var arr = [1, 3, 5, 4, 2, 1, 6, 9, 2, 0];
        // 转字符串,添加连接
        var result = arr.join("test");
        console.log(arr, result);

        
    </script>
</body>
</html>